The End is Near!?

So I was playing my OWBC this morning, already aware that the end was pretty close, but I didn't think it would come around quite so quickly. Rhapsody (my generation two heiress) had the last "O" baby, and is pregnant with the final "P" baby. After that, it's just the "C" baby and the challenge is over.

As pleased as I am that I've almost completed a challenge, I don't want to finish. What other sort-of small challenge will fill my time after the OWBC is over?

So does anyone have a small(ish) challenge  they recommend? 

Also, I noticed something on my f-list a while ago about milk in bags? Well, I didn't get it at the time, but I came downstairs this morning to find we had milk in bags...now I get it :D